I think trying to compare is not really going to resolve your particular problem.
Well, IF the same kit, it just might
What XP Service Pack are you running. SP3
When you boot and select Safe mode with networking - you will see all the drivers loading - do you see any errors as that screen flashes by?
No
Have you considered calling Microsoft to see what if anything they have to say?
No - I was hoping someone here (or there) might have an answer first. May have to.